T-Mobile announced today that 25 new markets are coming online for their “3G” HSPA+ network. Seems like no biggie, right - the other 3 big dogs (Verizon, AT&T, and Sprint) all know that 3G is so 2008.

Wrong. This isn’t any old 3G network – current tests show speeds anywhere from the same as, to 4 times faster than, WiMax – and T-Mobile’s only rocking HSPA+ 21 Mbps. HSPA+ has recently been demonstrated at speeds of 84 Mbps.

It's no secret that Sprint has had the San Francisco Bay Area on its 4G release roadmap for a while, with a planned release time frame of sometime this year. It's always been mind-boggling to me that the heart of the Silicon Valley, where Google itself lives, along with thousands of other tech companies, was not priority #1 for Sprint.

Is it all about to change? I was getting off Caltrain at Mountain View this morning, playing with the EVO, as usual, when I suddenly noticed the 4G widget somehow switched itself on.

After wiping the drool off our screens long enough to actually read Sprint’s press release for the EVO 4G, we found ourselves a bit put off by the 10$/month ‘Premium Data Charge’. Here’s the relevant excerpt from the release:

A $10 per month Premium Data add-on will apply allowing customers to take advantage of a richer data experience than ever before.

The way that the $10/month fee is presented in the press release seems to imply that it would only be applicable to those who can take advantage of Sprint’s 4G network, which is still in the process of rolling out in many parts of the country.

Sprint users: have you ever wanted to call somebody or video chat, while surfing the web, all at the same time? With the HTC EVO 4G coming June 4th for $199 (which we wrote about here), you can do just that. Before now, you needed an iPhone or another carrier (most GSM 3G implementations allow for this). Soon, you can do it right on your EVO 4G with Sprint.

If you're one of over 4 million people living in Houston, TX, your mobile connection options just got a lot better. Clearwire, the company providing WiMax/4G service for Sprint, announced today the launch of its 28th US metropolitan market in the Houston metro area.

According to the press release,

… coverage extends as far north as Conroe and northeast as Kingwood; as far west as Katy and southwest as Richmond/Rosenburg; as far south as Alvin and southeast as Clear Lake; as far east as Baytown.

The mobile sphere is abuzz with the rumors of a possible HTC Supersonic announcement tomorrow, all caused by a tiny note Sprint posted in the member area on Sprint.com. Here is a screenshot (courtesy of Sprint Forums):

According to other users who have talked to various Sprint customer service reps, Supersonic is indeed "coming very very soon", which seems to only confirm the rumor. Of course, nothing is 100% until we tune into the announcement… the time of which is currently unknown.